Display screen or portion thereof with an animated graphical user interface



FIG. 1 is a front view of a display screen or portion thereof with ananimated graphical user interface showing a first image of the claimeddesign.

FIG. 2 is a second image thereof.

FIG. 3 is a third image thereof.

FIG. 4 is a fourth image thereof.

FIG. 5 is a fifth image thereof; and,

FIG. 6 is a sixth image thereof.

The outermost broken-line border shown in FIGS. 1-6 illustrates theperimeter of a display screen or a portion thereof, as well as theboundary of the claimed design, and forms no part of the claimed design.The remaining broken lines illustrate portions of a graphical userinterface and form no part of the claimed design. The appearance of theanimated images sequentially transitions between the images shown inFIGS. 1-6. The process or period in which one image transitions toanother forms no part of the claimed design.

CLAIM We claim the ornamental design for a display screen or portionthereof with an animated graphical user interface, as shown anddescribed.